The effect of acute exercise on bone metabolism in the pre-pubertal child

• Main Author: Brooker, Molly J.
• Other Authors: Mahon, Anthony D.
• Format: Others
• Published: 2011
• Subjects: Bone remodeling.; Bones > Growth.; Exercise for children > Physiological aspects.
• Online Access: http://cardinalscholar.bsu.edu/handle/handle/186829; http://liblink.bsu.edu/uhtbin/catkey/1164852

Exercise is known to have a long-term benefit on bone mass in children, but little is known about the underlying mechanisms. The purpose of this investigation was to determine the acute effect of exercise on bone metabolism in pre-pubertal children. Biochemical markers of bone formation were measured in 4 male and 4 female children, 8 to 11 years of age. Each subject performed 50 vertical jumps. Serum osteocalcin and C-telopeptide of type I collagen (CTx), were determined prior to exercise and at 24 and 72 hours post exercise as indicators of bone formation and bone resorption. Osteocalcin concentration was 8.20 ± 3.65 ng•mL"' before exercise, and was 7.1 ± 3.7 ng•mL-' and7.4 ± 3.7 ng•mL-' at 24 hours and 72 hours post exercise, respectively (P > 0.05). CTx concentrations were 11632 ± 4093 pmol•L-' before exercise, and was 9831 ± 3159 pmol•L-' at 24 hours and 9722 ± 2426 pmol•L7' at 72 hours post exercise (P > 0.05). In conclusion an acute bout of ballistic exercise appears to have no effect on bone metabolism in pre-pubertal children. === School of Physical Education